Blue Hero

Technologie

Blue-Hero recovers the heat from wastewater streams by simple techniques in order to upgrade the the waste water into a sustainable energy source.

The thermal energy from the effluent of a sewage treatment is recovered with a combination of heat exchangers and a heat pump.

The Blue-Hero concept is managed in a such way that starting from a low temperature energy (eg 23 ° C) it manages to produce process water heated to 60 ° C and this with an unbeatable energy performance.

An example demonstrates the effectiveness of the concept:

The waste water treatment plant treats 500 m³ of wastewater a day

Purified water is released at an average temperature of 24 ° C

The calories in the waste water are very efficiently recovered, using heat exchangers and a heat pump. Every day 200 m³ day of process water is preheated from 12 ° C to 40 C!

On an annual basis (265 days of production) you save 1.725 MWh of energy.

With 1 kWh of electricity we produce up to 11 kWh of heat: COP (Coëfficient of performance) = 11

Compared to a conventional gas boiler this represents a saving of + / - 50.000 € / year

In addition Blue Hero saves normally 4 times more energy than the waste water treatment plant uses for its operation.

A reduction of more than 210 tonnes of CO2 a year is achieved (=73% reduction). This corresponds to getting 100 cars out of service (140 g CO2/km at 15.000 km/year).

The water discharges are cooled in summer and your waste water meets the temperature standards for discharges to surface water.

Finally, the pay-back of a complete Blue Hero is mostly less than 3 years. This is very short for an energy saving investment.